General bacterial porin family. General bacterial porins are a family of proteins from the outer membranes of Gram-negative bacteria. The porins act as molecular filters for hydrophilic compounds.[1] They are responsible for the 'molecular sieve' properties of the outer membrane.
About the CFR. The Code of Federal Regulations (CFR) is an annual codification of the general and permanent rules published in the Federal Register by the executive departments and agencies of the Federal Government.
CFR - Code of Federal Regulations Title 21. The information on this page is current as of April 1 2015. For the most up-to-date version of CFR Title 21, go to the Electronic Code of Federal Regulations (eCFR).